提示用户系统正忙_web方式
页面上要有下面这段html代码：
<div id="BusyMsg" align="center" style="z-index:101;left:25%;top:45%;width:50%;height:100; position:absolute; display:none;background:#F7F7F7; background-color: #F7F7F7; border: 1px solid #4284F7;"><table height="100%" align="center"><tr><td><img src="<%=ctx%>/images/loading.gif" width="16" height="16"/></td><td><label id='MsgText'></label></td></tr></table></div><div id="BusyDiv" style="position:absolute; top:0; left:0; width:100%; height:100%; z-index:100; display:none;"><table style="width:100%;height:100%;background-color: transparent; "><tr><td></td></tr></table></div>
function onLoading(){window.document.all.MsgText.innerHTML = "正在查询数据，请稍候……";window.document.all.BusyMsg.style.display = "";window.document.all.BusyDiv.style.display = "";}function afterLoading(){window.document.all.MsgText.innerHTML = "";window.document.all.BusyMsg.style.display = "none";window.document.all.BusyDiv.style.display = "none";}